Refrigerator



May 23, 1933. c. G. MuNTERs 1,910,854

REFRIGERATOR Filed July 19, 1929 Patented May 23, 1933 UNITED STATES PATENTt OFFICE CARL GEORG- MUNTERS, OF STOCKHOLM, SWEDEN, ASSIGNOR TO ELECTROLUX SERVEL UORPORATION, OF NEW YORK, N. Y., A CORPORATION 0F DELAWARE BEFRIGERATOR Application led July 19, 1929, Serial No. 379,351, and in Sweden July 21, 1928.

The present invention relates to a refrigerator cabinet, particularly for domestic purposes, provided with an absorption refrigerating apparatus, and is characterized by the combination of a heated compartment with bined with refrigerator cabinets are frequently operated by means of gas heating, whereby the exhaust gases escaping from the heating device of the apparatus have such a high temperature, for example 140-15()o C., that the same advantageously can be used for the heating of a compartment of known type, for instance for keeping victuals warm. The heated compartment, the inner volume of which for ordinary domestic purposes is relatively small as compared -to that of the refrigerator cabinet, is preferably placed above the latter as will appear from the embodiment of the invention illustrated in the aecompanying drawing. y

Fig. 1 is a cross-sectional view of an embodiment of my invention; and

Fig. 2 is a cross-sectional view taken onI i the lines 2 2 of Fig. 1.

On this drawing a refrigerator cabinet combined with a heated compartment in accordance with the invention is shown in longitudinal section. In the drawing reference character a designa-tes the refrigerator cabinet, on the back side of which an exclusively heat operated continuously working absorption refrigerating apparatus b is arranged, `the evaporator c of which extends into the refrigerator cabinet. The refrigerating apparatus is operated by continuous gas heating of the generator in the usual way and the exhaust gases escape from the heating device of the apparatus through a conduit d leading to another heating device provided in the compartment e, which has a considerably smaller volume than the refrigerator cabinet a, which heating device in the illustrated embodiment consists of an extension of said c onduit d. In order to facilitate a heat transfer between the exhaust gases and the air in the compartment e, that part of conduit d arranged inside the compartment may be provided with ns of known type, or be formed 1n such manner that a sufficiently large heat transfer surface is obtained. Both compartments a and e are well heat insulated and their interiors are accessible through doors f and g arranged on the front sides of the boxes. y

In order to control the temperature within compartment e a second flue 10 is provided which communicates with flue d at a point in the latter fille below or in the lower part of compartment e. Flue 10 extends substantially entirely outside of compartment e. In order to distribute the heated flue gases between lines d and 10 so as to regulate the temperature within the compartment, a valve member 11 is provided. Valve 11 is pivoted at the juncture of fines d and 10 and is so arranged that in one extreme position it completely closes flue 10 while in the other extreme position it completely closes flue d. Valve 11 is mounted on a pivot 12 which extends outside of the Hue and has secured to its outer end a crank 13. Crank 13 is provided with a slot 14 which engages a pin 15 mounted on a rod 16. Rod 16 extends within a cylinder 17 where it is secured to a piston which is arranged to be moved within the cylinder. The other end of the cylinder 17 communicates with a conduit 18 which extends to a thermostatic element 19 located in any desired place within compartment e.

If the temperature within compartment e rises above a predetermined point, fluid within thermostatic element 19 expands `and passes through conduit 18 to cylinder 17 where it acts upon the piston therein to move rod 16 downwardly, as viewed in Fig. 2. This movement of rod 16 causes crank 13 to turn in a clockwise direction which causes valve 11 to likewise turn in a clockwise direction and thus allow the passage of fiue gases from flue l into flue 10, while at the same time preventing to a greater or lesser degree ithe passage of flue gases directly through flue fl. If the temperature has become suiliciently high, valve member 11 will be turned Ahaving a compartment to be cooled, an abrator bein to a horizontal position and thus cause the passage of all the flue gases through flue 10. Inasmuch as practically the entire length of flue 10 is outside of compartment c, the compartment will not be heated by the passage of flue gases therethrough. pon a reduction of temperature in com artment e valve 11 will tend to allow more o the gases to pass through flue d and less through flue 10. Thus valve member 11 functions to distribute the flue gases between the two flues in such a manner'as to obtain a constant temperature in compartment e.

Under certain circumstances, for instance if theI refrigerating apparatus is heated by a medium of high temperature coming from a heat-source se arate from said apparatus, it may be suita le first to conduct this medium or a part thereof through the heating device of the heated compartment and thereupon to the refrigerating apparatus.

While I have shown and described a more. or lessI specific embodiment of my invention, it is to be understood that I am to be limited only by the appended claims viewed in the light of the prior art.'

Having thus described my invention, what I claim is: l

1. In combination, a refrigerator cabinet having a compartment to be cooled, an absorption refrigerating apparatus comprising a generator and an evaporator, said evaporator being located in said compartment, walls forming an insulated compartment to be heated situated above the compartment to be cooled and adapted to receive food, means for continuously heating said generator by combustion, a flue for conveymg products of combustion from said generator, said flue passingoutside of said compartment to be cooled and within said compartment to be heated, and means providing extended heat transfer surface on said flue within the compartment to be heated.

2. Incombination, a refrigerator cabinet sorption refrigerating apparatus comprising a generator and an evaporator, said evapolocated in said compartment, walls"form1ng an insulated compartment to `be heated, means for continuously heating said generator by combustion and means for indirectly h eatlng said last mentioned compartment w1th waste heat from said genera- 3. In combination, a refrigerator cabinet having a compartment to be cooled, an abof combustion from said generator, said flue passing outside of said compartment to be cooled and within said compartment to be heated.

4. 1n combination, a refrigerator cabinet having a compartment to be cooled, an absorption refrigerating apparatus comprising Aa generator and an evaporator, said evaporator being located in said compartment, walls forming an inslulated compartment to be heated situated above the compartment to be cooled and ada ted to receive food, means for continuous y heating said generator, means for heatlng the compartment to be heated with Waste heat from said generator and temperature responsive means in the last mentioned compartment operative to maintain a constant temperature therein.

5. In combination, a refrigerator cabinet having a compartment to be cooled, an absorption refrigerating apparatus comprising a generator and an evaporator, said evaporator being located in said compartment, walls forming an insulated compartment to be heated situated above the compartment to be cooled and adaptedto receive food, means for continuously heating said generator, a flue for couveyingwaste heat from said generator, said flue passing outside of said compartment to be cooled and within said compartment to be heated, a second flue communicating with said first'lue and arranged to pass substantially entirely outside of said compartment to be heated and valve means for distributing flow between said lues.

6. In combination, a refrigerator cabinet having a compartment lto be cooled, an absorption refrigerating apparatus comprising a generator and an evaporator, said evaporator being located in said compartment, Walls forming an insulated compartment to be heated situated above the compartment to be cooled and adapted to receive food, means for continuously heating said generator, a flue for conveying waste heat from said generator, said flue passing outside of said compartment to be cooled and within said compartment to be heated, a second l'lue communicating with said first flue and arranged to pass substantiall entirely outside of said compartment to e heated, valve means for distributing flow between said ues and temperature responsive means located in said compartment to be heated operative to control said valve.

In testimony whereof I have hereunto affixed my signature.

CARL GEORG MUNTERS. 

